Bullough, W. S. (1951). Practical invertebrate anatomy. London: Macmillan.
Trích dẫn kiểu ChicagoBullough, William Sydney. Practical Invertebrate Anatomy. London: Macmillan, 1951.
MLA citiranjeBullough, William Sydney. Practical Invertebrate Anatomy. London: Macmillan, 1951.
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